Ball-and-socket hanger



(Hommel.)

N."STBDMAN, Ball vand* Socket Hafrgr.

No. 235,711.l Patented- Dec; 21, 13780,

NPEYERS. PHOTO-I ITHDGRAFHER. WASHINGTON. me,

UNTTB STATES PATENT @errent f NATHAN STEDMAN, OF AURORA, INDIANA.

BALL-AND-socKET HANGER.

SPECIFICATION forming part of Letters Patent No.`235,711, dated December21, 1880.

Application filed October 21, 1880.

To all whom it may concern:

Be it known that I, NATHAN STEDMAN, ot' Aurora, in the county ofDearborn and State of Indiana, have invented certain new and usefulImprovements in Ball-and-Socket Hangers, of which the following is aspecification.

My invention is in thenature of an improvement uponwhat are known asball-and-socket hangers 7 for sha'fting; and it consists, iirst,inproviding upon each of the two bosses orjaws through which thesupporting and aligning screws pass a heavy lug, which is drilled toreceive a tie-bolt. Thejie-boltjoins the two bosses iu such a mannerthat the strain due to the vertical or angular downward pull of a beltshall be concentra-tediu the web of the hanger near the top, and wherethe section of the web is usually the greatest, instead of locating thestrain iu the web near its junction wit-h the lower boss, usually theweakest portion of the hanger. By this construction I am able to haveall the strength and rigidity of the favorite ball drop hanger withoutdetractiug from any of the advantages of the open drop hanger.

My invention consists, secondly, in slightly attening the sides of thesocket-seat on the shells parallel to the axis of the box in such amanner that the points of the aligning and supporting screws impingeupon the iiattened surfaces and prevent rotation of the box on and inthe direction of motion of the shaft.

My invention consists, thirdly, in providing in the quarters 7 of theupper shell of the journal-box recesses for the reception ofBabbittmetal linings, between which I construct a long channel for thereception of oil or grease or other lubricator.

In the accompanying drawings, Figure l is an elevation of the ordinarydrop hanger, showing the application of the tie-bolt. Fig. 2 is avertical section through the bosses and lugs of the hanger. Fig. 3 is aplan of the socket-seat ot' top shell of the journal-box. Fig. lIis across-section of the twoshells of the journal-box. Figs. 5 and 6 areplans of the two shells of the journal-box.

Similar letters of reference indicate similar parts.

A is the frame of the ordinary open drop (No model.)

hanger, provided with the usual screw'bosses or jaws B B', andsupporting and aligning screws C G. l

D is the usual journal-box, cousistingof two shells, D and D2, mountedupon the points of the screws C C.

Z) b are lugs or ears on the bosses B B', respectively, through whichpasses the tie-boltE.

' D is the upper shell of thejournal-box D, and D2 is the lower shell.In the shell Dl two recesses are formed for the reception of theBabbitt-metal linings d d', and in the shellD2 a single recess is formedfor the Babbitt-metal lining d2. Between the Babbitt linings d d anoil-channel, d3, is formed, as shown in Figs. 4 and 5.

The seats ou the exterior surface of the shells D and D2 are flattenedupon opposite sides parallel with the axis of the box D, one of saidattened portions, d, of the shells belng shown in Fig. 3. The ends oflthe screws will, of course, be made square, so as to present broadsurfaces to the iiattened surfaces d of the shells.

In Figs. 5 and 6 are shown the matching surfaces of the shells D and D2.In the shell D the ribs are formed upon the outer edge, and matchcorresponding recesses in the edge of the shell D2.

In the ordinary form of the open drop hanger the downward pull of thebelt produces a strain in the web across the narrow section, (indicatedby dotted line at an) while by uniting the two bosses B B by thetie-bolt E the strain is located in the web of the hanger at the pointindicated by dotted line at a', producing a tensile strain on one branchot` the hanger anda compressive strain upon the other branch, by whichmeans the ordinaryopen drop han ger may be madeto equal in strength andstiffness the ball-han ger without diminishing its merits as an openhanger.

rIhe removal ot' the tie-bolt E is easily and quickly accomplished forany purpose necessary in the use of the hanger.

The ordinary journal-box for balland-socket hangers depends entirelyupon the bearing of the Babbitt meta-l upon the surface of the shaft tocenter and hold the shells in position; but by means of the matchingribs and channels IOC shown in Figs. 5 and 6 the box is centered andretained in position as perfectly as though the box D were solid.

By means of the oil chamber or channel d3 a large supply of lubricatingoil or grease can always be maintained in contact with the surface ofthe shaft to avoid heating of the journal and diminish the frictionalresistance oi"` B', through which pass 'the vertically-arrangedaligning-screws, the lower one of which supports the shaft-boxing, saidbosses being prozo vided with projecting parallel lugs'b b', connectedby a tie-bolt, E, the Whole being constructed and arranged substantiallyas shown and described.

2. The box D of an open drop ball-'andsocket hanger, consisting of twosemi-cylindrical shells, D' land D2, each-of said shells having a seatupon its exterior surface for the reception oi' the points of the screwsC C', and said seats having their surfaces flattened parallel with theaxis of the box, so as to impin ge upon the points of the screws,substantlally as and for the purpose described.

In testimony whereof I have signed my name to the foregoingspecification in the presence of two subscribing Witnesses.

NATHAN fSTEDMAN.

Vitnesses:

COLLIN FORD, Jr., C. W. WLTHENBURY.

